Back to EveryPatent.com
United States Patent | 5,237,294 |
Roederer ,   et al. | August 17, 1993 |
There is disclosed a six-port hybrid microwave coupler comprising three inputs and three outputs which are isolated from each other and matched such that a signal applied to any one of the inputs produces signals on all three of the outputs, said signals being orthogonally distributed in phase and uniformly distributed in amplitude. The coupler has a plane configuration of transmission lines with an inner ring comprising three similar segments with the interconnection points of the segments constituting three input or outlet first ports of the coupler. The coupler also has an outer ring comprising three similar segments with the interconnection points of the segments constituting three outlet or input second ports, respectively, of the coupler. The coupler also has three radial branches connecting the interconnection points of the inner ring segments to corresponding interconnection points of the outer ring.
Inventors: | Roederer; Antoine (Breloftpark 32, Noordwijk, NL); Maximo; Martin P. C. (Parque de Vergara, 11-B2, 28250 Torrelodones, ES) |
Appl. No.: | 802685 |
Filed: | December 5, 1991 |
Dec 06, 1990[FR] | 90 15315 |
Current U.S. Class: | 333/117; 333/116; 333/120 |
Intern'l Class: | H01P 005/16 |
Field of Search: | 333/115-117,120,123,128 |
2784381 | Mar., 1957 | Rudenbom. | |
2874276 | Feb., 1959 | Dukes et al. | 333/120. |
3086178 | Apr., 1963 | Boyd, Jr. | 333/116. |
3678415 | Jul., 1972 | Kuroda | 333/115. |
4127832 | Nov., 1978 | Riblet | 333/116. |
4328471 | May., 1982 | Quine | 333/128. |
Sakagami et al., A Constant-Resistance Power Divider Using Coupled Lines . . . , The Trans. of the IECE of Japan, vol. E60, No. 1, Jan. '77, pp. 44, 45. IEEE Transactions on Microwave Theory and Techniques, vol. 32, No. 1 Jan. 1984, New York US pp. 51-57; D. I. Kim et al. IEEE MIT-S International Microwave Symposium-Digest of Technical Papers Jun. 14-16, 1976, Cherry Hill, US pp. 63-65. Microwave Journal, vol. 22, No. 2, Feb. 1979, Dedaham US pp. 51-52, H. C. Chappell. Multiple Beams from Linear Arrays*, IRE Transactions on Antennas and Propagation, J. P. Shelton. |
______________________________________ exp (j120) 1 1 1 exp (j120) 1 1 1 exp (j120) ______________________________________